#!/bin/sh
#
# /etc/init.d/judged -- startup script for the Power Judge Server
#
# Written by Harold <power0721@gmail.com>.
#
### BEGIN INIT INFO
# Provides:	  Harold
# Required-Start:    $local_fs $remote_fs $network $named
# Required-Stop:     $local_fs $remote_fs $network $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the Power Judge server
# Description:       starts Power Judge server using start-stop-daemon
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local/bin/powerjudged
NAME=judged
DESC="Power Judge Server"

test -x $DAEMON || exit 0

if [ `id -u` -ne 0 ]; then
    echo "You need root privileges to run this script"
    exit 1
fi

. /lib/init/vars.sh
. /lib/lsb/init-functions
export ONLINE_JUDGE=true

PID=/var/run/judged.pid

JUDGE_USER=judge
JUDGE_GROUP=judge

DATA_HOME=/home/${JUDGE_USER}/data
WORK_HOME=/home/${JUDGE_USER}/temp
JAVA_POLICY_FILE=/home/${JUDGE_USER}/temp/java.policy
CONFIG_FILE=/home/${JUDGE_USER}/judge.properties

#
# Function that starts the daemon/service
#
do_start()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --chuid $JUDGE_USER --pidfile $PID --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --chuid $JUDGE_USER --pidfile $PID --exec $DAEMON -- \
		$DAEMON_OPTS 2>/dev/null \
		|| return 2
}

test_powerjudge_config() {
	$DAEMON -t $DAEMON_OPTS >/dev/null 2>&1
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PID
	RETVAL="$?"

	sleep 1
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	start-stop-daemon --stop --signal HUP --quiet --pidfile $PID --name $NAME
	return 0
}

#
# Rotate log files
#
do_rotate() {
	start-stop-daemon --stop --signal USR1 --quiet --pidfile $PID --name $NAME
	return 0
}

case "$1" in
	start)
		[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
		do_start
		case "$?" in
			0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
			2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
		esac
		;;
	stop)
		[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
		do_stop
		case "$?" in
			0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
			2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
		esac
		;;
	restart)
		log_daemon_msg "Restarting $DESC" "$NAME"

		# Check configuration before stopping powerjudge
		# if ! test_powerjudge_config; then
		# 	log_end_msg 1 # Configuration error
		# 	exit 0
		# fi

		do_stop
		case "$?" in
			0|1)
				do_start
				case "$?" in
					0) log_end_msg 0 ;;
					1) log_end_msg 1 ;; # Old process is still running
					*) log_end_msg 1 ;; # Failed to start
				esac
				;;
			*)
				# Failed to stop
				log_end_msg 1
				;;
		esac
		;;
	status)
		status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
		;;
	*)
		echo "Usage: $NAME {start|stop|restart|status}" >&2
		exit 3
		;;
esac

:
